Machine for use in the manufacture of boots and shoes.



M. F. BROGAN.

MACHINE FOR USE IN THE MANUFACTURE OF BOOTS AND SHOES.

APPLICATION FILED DEO.11, 1911.

Patented July 21, 191% if) @TA PA' h ftjfii MICHAEL F. BB-OGAN, OF LAWRENCE, MASSACHUSETTS, ASSIGNOR T UNITED SHOE DEACHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

MACHINE FOR USE IN THE MANUFACTURE OF BOOTS AND SHOES.

mosses.

Application filed December 11, 1911.

To all whom it may concern Be it known that 1, MICHAEL FRANK BnocAN, a citizen of the United States, residing at Lawrence, in the county of Essex and State of Massachusetts, have invented certain Improvements in Machines for Use in the Manufacture of Boots and Shoes, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to machines for inserting fastenings and is herein shown as embodied in a machine for forming and inserting staples. Although many of the features of the invention are, by their nature,

. useful only in stapling machines, it will be apparent that other features are of more general applicability in the art to which the invention particularly relates. In construin the terms of the claims, therefore, consideration should be given to the scope of the usefulness of the novel features of the invention.

The staple forming and inserting machine in. which the invention is herein shown as embodied is of the type disclosed in United.

States Letters Patent to Wilfred J.- Drey, No. 1,011,592, granted December 12, 1911, for improvements in machines for use in the manufacture of boots and shoes, and like the machine of said Letters Patent is particularly adapted to insert a staple of fine wire through the upper and the channel lip Or the rib or the shoulder of the sole of a shoe, and to clench the said staple upon said lip or rib or shoulder to form a permanent fastening in the shoe.

It will be apparent that the holding power of a staple of fine wire will depend largely upon the nature of the clench which is imparted to it and that the efficiency of a machine for inserting such staples will depend to a large extent upon the certainty and the accuracy with which the clenching effected.

An object of the invention, therefore,-is to provide improved clenching means which will be especially useful in a fastening inserting machine of the type to which the invention particularly relates.

More particularly the invention aims to provide clenching means which will effect the clenching of the fastening in a novel Specification of Letters Patent.

Patented July 21, mm.

Serial No. 665,035.

manner and which will be especially useful when the machine in which the invention is embodled 18 used for the particular purposes above set forth.

As hereinabove pointed out, the machine in which the invention is herein shown as embodied is particularly useful in'inserting staples to unite the upper and sole of the shoe While the shoe is in its original lasted condition, the machine being adapted to insert the staples between the lasting tacks. serted at irregular intervals. fore, preferable that the machine be arranged so that it may be readily actuated to perform a single operation and then step.

A feature of the invention is the provision of means whereby the stopping of the machine after a single operation is performed will be automatic and beyond the control of the operator thereby preventing a second staple being riven after one has been driven and insuring a single operation only of the machine for a single actuation.

An essential element of a machine for inserting staples of fine wire is means for pressing together 'and holding in proper relation to each other, and to the inserting mechanism, the parts through which the staple is to be inserted, the means ofthe illustrated machine comprising a clenching tool which cooperates with a throat to this end, the clenching tool and throat being relatively movable. In the machine of the copcnding application, the actuation of the mechanism for inserting staples and the relative movement of the throat and clenching tool into work holding relation to each other are independent. It may happen,

therefore, that the staple inserting mechanism may be actuated when the work is not in proper condition to receive the staple, the staple thus being only partly inserted or being bent out of shape by reason of the looseness of the parts through which it is to be inserted.

An important feature of the invention is the provision of means for insuring the proper positioning of the work before the actuation of the mechanism for inserting the fastenings. In the illustrated embodiment of this feature of the inventiomthe required timing of the movements of the Work holding means and of the actuating means is obtained by operating both of these means These staples are necessarily in- It is, therefrom a single manually controlled element, the two means being so connected that they must operate in the required succession. Preferably provision is made whereby the clamping pressure upon the work may be varied'without varying the relative timing 7 of the parts.

In the machine herein shown, as in the I machine of the co-pending application,

means is provided for pressing together the pressing together the parts to be united before the fastening inserting operation begins and means for bringing to bear upon the parts held in the aforementioned pressing means an additional localized pressure, of means for insuring that the first mentioned pressing means is in operative position and'is exerting the required amount of pressure before the last mentioned pressing means is rendered operative.

Different aspects 1n-which the invention may be viewed and other features and obj'ects of the invention will appear from the ,following description and claims when con-- sidered in connection with the accompanying drawings, in Which-'.

Figure 1 1s a perspective view of the head of a machine having embodied therein the present invention in a preferred form; Fig. 2 shows the head partly in side elevation and artly in section, this figure illustrating particularly the actuating mechanism and the means fop preventing the repetition of the operation of the machine; Fig. 3 is a broken perspective view of the wire feeding mechanism; Fi 4 is a side elevation, partly in section, of t e wire feeding mechanism; Fig. 5 is a perspective view of the clenching tool showing a staple approaching this tool; Fig. 6 illustrates the action of the clenching tool upon the staple, and Fig. 7 shows the manner in which the clenching tool turns the staple back toward the work after it has been driven through the work.

As in the machine of the Letters Patent above identified. the cams from which the various mechanisms are operated are connected to a main driving shaft 2 mounted in hearings in a head 4 carried upon a standard 8. A driving pulley 1O loosely mounted upon the shaft 2 is arranged to be clutched to the shaft at the will of the operator by any suitable clutch mechanism, the clutch herein lllustrated being-of the Horton clutch type. The clutching of the pulley 10 to the shaft 2 is controlled, in the illustrated machine, by a lever 12 carried upon a rockshaft 14. The lever 12 normally holds the clutch in its inoperative condition, the roller cage 16 being provided with a stop portion 18 which normally engages a spring cushioned plunger 20 upon the lever 12. When the lever 12 is rotated in a counter-clockwise direction about the axis of the rock-shaft 14,

of engagement with the stop 18 and the.

roller cage 16 is rotated by a'spring, not shown, in the usual manner to bring the rolls 22 into clutching position between the clutch member 24 upon the shaft 2 and the pulley 10. A spring 26 tends to maintain the lever 12 normally in its clutch releasing position. The brake arm is also carried by the rock-shaft 14 and is moved into and out of braking relation to a brake disk 30 as the rock-shaft is oscillated during the clutch releasing and clutch actuating movements of the lever 12.

As hereinabove stated, the machine com.- prises'staple forming mechanism and staple driving mechanism constructed and. arranged to drive a staple through the upper and the channel lip or the shoulderof the sole of a lasted shoe, and novel means for clenching the staple upon the inside of the channel lip or in the inside channel. The staple forming mechanism is not herein shown in detail, being substantially identical with that of the Letters Patent above referred to. The outside former of the said staple forming mechanism is operated from a cam groove in the cam disk 56, and has attached thereto a tucking tongue 7 0 operating in the guideway 36 in the throat 108' in the same manner as the corresponding element of the machine of the Letters Patent. The inside former is operated from a cam groove 104 in'the cam disk 106, the head of the inside former being shown at 90 in Fig. 1, said inside former having yielding connection with an arm 96 upon a rock-shaft 98 which has at its outer end anarm 100 carrying a cam roll 102 which operates in the cam groove 104. The arm 100 also operates the wire feeding mechanism, as hereinafter more fully described.

The staple, when formed, 'is driven through a nose 108 which is substantially identical with the nose more fully described in the Letters -Patent above referred to. The clenching tool 110 iscarried by. a dovetailed slide 112 arranged to slide in a guide- Way 114 in a bracket 116 overhanging the nose 108, the slide being maintained yield-' As hereinabove suggested, an important feature of "the invention is the means for bringing the clenching tool 110 and the nose 108 into work clamping relation to each other and insuring that these parts shall be in such relation before the machine is actuated to insert the staple. The illustrated means comprises a yoke 118 having its two arms pivotally connected to bell cranks 120. The other arms of said bell cranks 120 are connected to the two arms of a yoke 122 which is connected by a rod 124 to a treadle, not shown. The upward movement of the yoke 120 may be limited by an adjustable stop 126.

Passing through an opening in the forward end of the yoke 118 is a bolt 128 having a shouldered head 130 pivoted between ears 132 upon an upstanding portion 134 of the slide 112. Surrounding the bolt 128 and confined between a washer 136 andthe forward end of the yoke 118 is aspring 138, the washer 136 being adjustably held upon the bolt 128 by a nut 140. Adjustment of the nut 140 upon the bolt 128 varies the tension of the sprin 138.

The clutch controlling lever 12 is operated, through the connections with the treadle which have just been described, by.

means comprising a latch or link 142 having the same pivotal connection with one arm' of. the yoke 122 as one of the bell cranks 120, said link 142 being provided with a slot 144 having two portions of different lengths. The link 142 is confined between the members of a forked arm 146 of the lever 12 and receives within its slot a pin 148 adapted to seat itself either in the socket 150 at the upper end of the slot 144, or in the socket 152, these sockets being located side by. side. The link or latch 142 has an arm 154 extending beyond its pivotal connect-ion with the yoke 122, and a spring 156 connected at one end to this arm and at its other end-to the yoke 122 tends to hold the link or latch 142 in such position that the pin 148 engages the front wall of the slot 144, whereby, when the link is drawn down the pin will enter the socket 150, the length of the slot from its bottom to the socket 150 being less than the length from the bottom to the socket 152. The slot 144 is long enough in both parts to allow sufficient lost motion before the lever 12 is turned about its fulcrum, so that the clenching tool 110 may be brought into work clamping relation to the nose 108.

The operation of the parts just described is as follows: As the operator depresses the treadle and pulls down the rod 124, the yoke 122 will cause the bell cranks to turn in a clockwise direction in Fig. 2, thus moving the yoke118 rearwardly or away from the operator. The spring 138 being stronger than the spring which tends to keep the slide 112 at the forward end of its movement, the movement of the yoke 118 will be transmitted through the spring 138 to the bolt 128-and thus to the slide 112. When the clenching tool 110 has moved toward the throat 108sufiiciently to cause the work to be pressed between these parts, the movement of the slide-112 will be checked, or at least retarded, and further movement of the yoke 118. will tend to compress the spring 138, thus increasing the pressure upon the work between the clenching tool 110 and the throat 108. As the yoke 122 continues to move downward after the work is clamped,

'2. The machine will thus be actuated todrive a staple only after the work has been properly clamped.

To prevent the driving of more than one staple as a result of a single actuation of the machine, means is provided for disconnecting the clutch at the end of one rotation of the driving shaft; Th illustrated means comprises a finger 157 upon the rock-shaft 98, this finger being so located that when the rock-shaft 98 is turned in the direction to cause the inside former to move into operative position the finger will engage the link; or latch 142 and move it toward the left in Fig. 2, thereby causing the pin 148 to move from the socket 150'int0 the socket 152. The socket 152 being deeper than the socket 150, the lever 12 is permitted to move un der the action of the spring 26 into clutch releasing position, so that the spring cushioned plunger 20 engages the stop 18 near the end of one rotation of the shaft. The machine is thus rendered non-repeating.

As above pointed out, the wire feeding mechanism is operated from the arm 100 controlled by the cam groove 104. The illustrated wire feeding mechanism comprises a feeding wheel 158 carried upon a feed wheel shaft 160 towhich is connected a ratchet wheel 162 arranged to be engaged by a pawl, or pawls, 164 pressed toward the ratchet wheel by a spring 166. The pawl 164 is carried by a disk 168 loosely mounted upon the shaft 160 and connected by a link 170 to the arm 100. The disk 168 is provided with a slot 172 in which slides a block 174 carrying the pivot for the link ioo 164 whereby the length of wire fed into staple forming position may be varied. A presser roll 176 keeps the wire in engage ment with the feed wheel 158. To counteract the tendency of the wire to curve in one which engages the wire at a different part of the feed wheel 158, the two rolls 176 and 178 cooperating to curve the wire in a'direction opposed to the direction 1n which 1t tends to curve as it leaves the roll 176. The

roll 178 is carried by a bracket 180 provided with a fin 182 received in-the forked end of an arm 184 clamped to the shaft which carries the roll 178.

To vary the pressure exerted upon the wire by the roll 178 a set screw 186 is arranged in the brgicket 180 to bear upon the arm 184m such manner that the bracket 180 may be turned more or less about its pivot in the arm 184 as the screw 186 is turned. .The rotation of the feed wheel shaft 160 is retarded by a friction sleeve or clamp 188, surrounding said shaft or'a second sleeve pinned to said shaft. A wire guide 187 carried upon an arm 189 attached to the bracket 180 receives the wire from a reel or other suitable container and guides it beneath the presser roll 178.

To facilitate the insertion of the staple in the desired location when the machine is used for the particular purposes above specified,-and also to insure proper clenching of the staple when the machine is used for any purpose, the clenching tool is so constructed as to clench the staple in a novel and effective 'manner. In machines for inserting sta les' hithertoin use, it has been customary eitlihr to turn the legs of the staple toward each other or away from each other in the same plane and in the plane of the body of the staple. By the improved clenchlng means herein" shown, the legs of the staple are turned out of the lane of the body of the staple and are either rought down flat upon the face of the work or are curved back so that the legs again enter the work,'after the manner'of the clenching of a nail. The operation of the clenching means is partlcularly illustrated in Figs. 5, 6 and 7 of the draw- Tt will be noted that the clenching tool is provided with a clenching cavity 190 which is wide enoughto receive both legs of the staple and is so' shaped that in the illustrated machine the legs of the staple are both turned down, see particularly Fig. 6. The lower side 192 of the clenching cavity is preferably substantially straight across and may either be cut away so much that the legs will be turned down in a substantially straight line, or it may have sufficient of a wall to cause the legs to be turned back toward the work as they emerge from the clenching cavity. The illustrated clenching means is shown as adapted to turn the legs back into the work. The clenching caving means.

ity may also be so shaped that it will bend the legs slightly toward each other, thereby increasing the holding power of the staple. It will be observed that there are many advantages of this mode of clenching the staple, especially when the machine is used for the particular purposes above specified. Ow-- ing to the location of the staple in the shoe, it is desirable to turn the legs down to be sure that they are out of the way of the inseam trimmer. Moreover, owing to the fact that the length of the staple is relatively great, compared to its widt it is not practicable to clench the staple'in the usual manner by .turning the legs toward each other since they will not readily pass eachother, particularly when the staple is formed with legs having blunt ends. A further specialadvantage of clenching a staple in the manner above described when themachine is used 1 for inserting staplesthrough the upper and; channel lip or rib or shoulder of a lastedl shoe, is that there is not so much chance of the staple becoming unclenched during the tack pulling operation and the ends of the staple are turned into stock having greater holding power than that through which the staple is driven or that which lies above the staple. I i

It will be noted that the clenching cavity is formed in an incllned faceat the end" of the clenching toolwhich is intersected by another face upon the bottom of the tool in such manner that. a sharp edge is formed upon the end of the tool whereby the tool may be forced down into the bottom of the channel of a shoe or down into the crease between the channel lip and the face of the sole.- It will be noted further that the bottom face of the tool intersects the. face in which the clenching cavity is formed in such tightly together along a line at one side of but closely adjacent to the line of insertion just before the fastening is inserted, and

means for actuating said last mentioned pressing means constructed to insurethe pre-. vious operation of the 2A machine for attaching an upper to the channel lip or to the shoulder of a sole comprising, in combination, fastening infirst mentioned pressmeaaea serting mechanism, means for ressing together the parts to be united befbre the fastening inserting operation begins, other means operating automatically to press said parts together along a line at one side of but closely adjacent to the line of insertion just before the fastening is inserted, a'single manually operated means and connections from said means for actuating said last mentioned pressing means and for operating said first mentioned pressing means, said actuating connections providing lost motion whereby said first mentioned pressing means is operated before said last mentioned pressing means is actuated.

3. A machine fgr attaching an upper to the channel hi) or to the shoulder of a sole having, in combination, fastening inserting mechanism comprising a stationary nose or throat, a clenchin tool constructed and arranged to enter be ind the channel lip or in the channel of the sole and movable toward the nose or throat to clamp together the parts to be united, means for actuating said inserting mechanism constructed to move said clenching tool yieldingly into work clamping position, and means inde endent of the means for moving said clenching tool into work clamping position for automatically stopping said inserting mechanism after a single fastenin has been inserted.

4. In a machine 0 the class described, staple forming and inserting means constructed to form and insert a blunt-ended staple and staple clenching means shaped to turn the projecting ends of both legs of the staple to one side of the plane of the body of the staple and to curve said legs back into a plane substantially parallel to the plane of the body of the staple.

5. A machine for attaching an upper to" the channel lip or to the shoulder of a sole having, in combination, staple forming and inserting mechanism constructed and arranged to form and insert a blunt-ended staple through the parts to be united with the body of the staple substantially paral-' lel to the bottom face of the sole, and means for clenching the projecting ends of said staple shaped to turn both legs of the staple to one side of the plane of the body of the staple. I

6. A machine for attaching an upper to the channel lip or to the shoulder of a sole having, in combination, staple inserting mechanism arranged to insert a staple through the parts to be united with the body of the staple substantially parallel to the bottom face of the sole, and means for clenching the .staple constructed to turn both legs of the staple toward the face of the sole.

7. A machine for attaching an upper to the channel lip or to the shoulder of a sole having, in combination, staple inserting mechanism arranged to insert a staple through the parts to be united with the body of the staple substantially parallel to the bottom face of the sole, and means for clenching the staple shaped to'turn both legs of the staple out of the plane of the body of the sole and to cause them to enter the stock again below said staple body.

8. In a machine of the class described, fastening inserting means and fastening clenching means provided with a clenching cavity shaped to direct the projecting end of the fastening toward its lower side and having said lower side cut away.

9. In a machine of the class described, staple inserting means and staple clenching means havin a clenching cavitycut away at its lower si e, said cavity being shaped to direct both legs of the staple toward said cut-away side. s

10. In a machine of the class described,

staple forming and inserting means constructed to form'and insert a blunt-ended staple, and means for clenching the ends of the staple that projectthrough the work, said, means having a staple clenching cavity so shaped that it turns both of the legs of the staple to one side of the plane of the body of the staple and also turns said legs toward each other.

11. In a machine of the class described, a clenching tool havin a sharp edge formed by the intersection 0 two faces of said tool, said tool being rovided with a clenching cavity which is f dnned in one of said faces, is closed on all sides except where the other face intersects said cavity, and is so shaped that the ends of the staple legs may emerge through said open side during the clenching operation.

ln'testimony whereof I have signed my name to this specification in the presence of two subscribingfivitnesses.

l CHAEL F. BROGAN. 

